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Finding the Third Proportional to 54,687 and 128,764

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Solution

The third proportional to 54,687 and 128,764 is: 303,182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,687 : 128,764 = 128,764 : x
  2. Step 2: Convert to fraction form
    54,687/128,764 = 128,764/x
  3. Step 3: Cross multiply
    54,687x = 128,764 × 128,764
  4. Step 4: Simplify right side
    54,687x = 16,580,167,696
  5. Step 5: Solve for x
    x = 16,580,167,696/54,687
  6. Step 6: Final answer
    x = 303,182.98

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.